Improvement in means for utilizing exhaust steam



4 Sheets-Sheen; I; DOWNES, I MEANS FOR UTILIZING EXHAUST STEAM.

Patented Sept. 19,1876.

Y 4 Sheets-Sheet 2. J. DOWNES.

MEANS FOR UTILIZINGEXHAUST STEAM. No.18Z,4Z4. Patented Sept. 1&7,v1876.-

N, PETERS. PHDTO'LKTHOGRAPHFJZ, WASHINGTON. D c.

I SheetsSheet 3. J. DOWNES.

MEANS FOR UTILIZING EXHAUST STEAM. No. 182,424, Patented Sept. 19, 1876.

MPETERS. PNOTO-LITHOGRAPHER, WASHINGTON. D C.

4 Sheets-Sheet 4.

J. DOWNES. MEANS FOR UTILIZING EXHAUST STEAM. No;18Z,4Z4. Patented Sept.19, 1876.

* adam V v TED-STATES JOHN nowm 'ot H ANDsVvoRT H, ErieLAND. l

' IMPROVEMENT INMEANs' Eon urluzmje (EXHAUST s i'E'AM.

Specification forming part of Letters Patent No. 82,424, datedSeptember19,1876; application filed r July 1,1876.

To all whom it may concern: r

Be it known thatI, JOHN DowNEs,.of Handsworthfln the county ofStafi'ord, England, merchant, have invented new. and useful Improvementsin Locomotive'andStationary Steam-Engines, which improvements are fullyset forth in the. following specification, reference" being had to theaccompanying drawings.

My invention consistsof the construction andcombinations or arrangementsof parts, hereinafter, described, of locomptive .and stationarysteam-engines, the said construction and combinations of parts havingfor theiriobject the condensing and utilizing of the exhaust steam'ofthe said engines, andmaking them noiseless and smokeless, or nearly so,and theeconomizing of fuel and Water.-

. My improvements are especially applicable to locomotive-engines forcommon-.roadsand tramways, but may also be applied tostationar-yandmarine steam-engines.

V i In carrying my invention into effect, 1 make the outlet-port for thepassage of the exhaust steam from the cylinder considerablylarger thanthe inlet-port, and I connect the said inlet-port with a tank or rangedashereinafter described, and convey the said exhaust steam into thesaidv tank, and from the said tank into the boiler. This tank is, bypreference,vlined with sponge, cork, india-rubber, or other materialwhich will rapidly: condense the. exhaust steam, as wen as deaden thenoise.

The tank may be divided into compartments, or sections, the

said compartments being in communication withone another. The water withwhich the boiler of the. engine. is fed is heated 'by the saidexhauststeam before it issupplied by the 1 pumpor injector to, theboilers The tank is furnished with arivalve topermit of'the-escape ofexhaust steam when. necessary. v i ,From either compartment of the tankdescribed a pipe passes to the fire-hole-ofthe boiler-furnace, the saidpipe being. furnished with one or more jets. and regulators... By.

means of-the said pipe and its jet or;- jets'and regulators th eexh'auststeamis conveyed from the tank ortanksinto the furnace in the form .oi'aspray,and tends by its action .to increase .thedraftand suppresssmoke... I also in a series of pipes, ar-- similar way-convey theexhaust steam into the funnel of the engine for creating a draft.

gines of tramway-carsthereis no noise of escaping steam, andthe'frighteningof horses isavoided.-,:

Havingexplained the nature of-my invention,l will proceed to describe,with reference to the accompanying drawings, the manner in which thesame is to be performed.

Figure 1 represents in side elevation, Fig. 2 in end elevation, and Fig.3 in transverse vertical section, a locomotive steam-engine providedwith my improvements. Fig. trepresents a portion of the same inlongitudinal vertical section. r 1:

The same letters of reference indicate the same parts in the severalfigures of the draw- Around thevupper side of the'exterior-of theboilern of the locomotivesteam-engine I placea tank or secondary boiler,b, in to which tank the exhaust steam from the steam-cylim der isconveyed by means of pipes connected with the outlet-ports 10f the saidcylinders,

the said outlet-ports beingmadeconsiderably larger thanthe inlet-ports.One of these pipes is represented in Fig; 1, and'is marked 0, the upperend 0t" the saidpipe c dippinginto. the water with which thetankt'ispartly filled.-;..

In the drawing, the tank 'b consistsof a singlechamber, but the saidtank may be di Ivided .intocompartments or sections commu-j nic'atingitheach other, and'thefsaid tank may belin'edv with sponge or othermaterial which..wi1l rapidly condense' the exhaust.

steam, and deaden the noise of .theentering steam; The exhaust'steampassed into the tank b bythe pipes c i's-ipartly condensed therein,.Btlld the water. in the said "tankuis brought to aboilingor nearlyb'oilingheat;

I The-heated water: in the tan-kb maybe'fe d" totheboiler. a by a pump,or: by an injector; oruthe said water, as wellas the un'condensedexhaust steam: in: the; tank may fed to the boiler aby an'injectorin thefollowing manner 0n theend :of :thei-tank b is adomefd,

from the side of which a pipe, 6, passes to the bottom of the boiler 00,a valve or valves, openin g' inwar'dgbein'g situated atthat end ofthepipe and through the valve or valves in its'bottom' end into the boilera. i For the purpose of promoting the draft through the-furnaceLincreasin-g the com-bustion of the fuel therein, and :preventing theformationof smoke," I convey a poi-'tionof the exhaust steam from thetank- 11 to'the saidzfuiw nace i'by means-ofrthe pipe 70 passing to theunder sideof the boiler The-"lower end of the said pipe'k isfurnished'Witha nozzle=piecej l, which opens-into the-pipe m; passingrthre h theash-pit n of the furnace,or through the furnace itself." This pipe onis-provided with branch pipes 19 p,-eachof which has at itsend a jet,',-q;,-situated withi nthe belt-mouth pipeu, projecting. into the furnacei. The exhaust steam conveyed to, the pipes to MIDTXGS' with the airentering the said pipes, an'd the mix tureof exhaust steam andairpasses-into the furnace Theinner ends of the bell-mouth pipes-a u areflattened out; and provided with 811138, so as to inject the mixture ofexhaust steam and air into thefurnacein the form of D The jet q and thebell-mouth pipe u may be dispensed with,; and the pipe p may deliver theexhaust steam direct-into the a-shpit-orfire-box.

The exhaust stea-mvissomewhat superheatedinits passage through thepipe-m, which is heated by the-i urnacei. The quantity of exhaust steampassing-to the furnace through the pipes Z0, m 13; aindjetsq, mayberegulated by the .-stop-co ckw ,1 orthe. exhaust steam may bebroughtdirect from the dome'f, over the top of the tank I) tothebell'mouthpipes an. The exhaust jsteam alone may be conveyed-to. thebellmouth pipes ;u u in the man ner described, or a mixture of exhauststeam I and heatedam- 111 the latter casethe-pipe' m is connected to thepipe 7,;which passes-Eto-the smoke-box It, the said '-pi;pe a"term-inating'in acoil, 3-, fixed in. the said smoke-box; -V'I(S'ee Fig-.1;) The end ofthis coil sisopen'rtofth-e ai-rr; Theair circulaztin gthrough the coil '8 -b'ecomes'=' -heatedthereby -and m-ixi-ng with theexhaust I steam supplied by the :BUZZlG-iil, enters the furnace by the'jets q;' -;Thedraft-through the furnace and; the combust-ion" of'theffuel. :thereim are thereby promoted,;andismok; prevented." The-draft ofthe furnace may alsoibe"promoted by con'veyingthe-exhaust, steam. fromthe a v may bejapplied to' 'locoinotiy'eshn"Wh In. add tlong.toeonveymgthe exhaust steamy" or a'imxture of exhaust steam and heatedair,"

to the front of the furnace t, one or more pipes may convey the exhauststeam through the bottomof the furnace,to blow vertically into theash-pit, and'through the bars of the grate or the exhaust steam may beconveyed to the furnace 41 through the back thereof. By passingtheexhau'srsteam into the fire-box it becomes so' heated that on=itsescape into the atmosphere it is not condensed,; and is,co nsequentl-y,invisible. i i

By means of a pipe, 9 connected with the steam-dome g, surplus steam maybe conveyed to the furnace to deaden the fire a nd prevent,

noise of escaping steam from the the safetyvalve when the engine isstanding.

Instead of employing a tank around the upper part of the boiler forcondensing the exhauststeam, one or more tanks'ferthe exhaust steammay-be: situated at the" side of sidesof and belowthe b'oi'ler; the said'exhausttank or tanksibein g used in coinbi nation with a coldwater tankorpipes'aroundt'he boiler;

This modi'fi'cation 'of my invent on is illu's trated in longitudinal"section i=n Fi'g.5, and' I cross-s'ection-inFig. 6,-Where 1 1 are the'tanks' for theexhaust steam at the sidesof andihea low the boiler'a; and2: is the-tank around the boiler," serving' as ac'old-water tank.3'isthe exhaust-steampipe'from the 'cyflinderin com-m-unication:with-the tai'ik la Thepi'p'e 3opensinto the-'- tank 1 bymeans of the-sma1l"-cham'- her 4, the u pper'part ofwhich perforatedwith smallholes-,- forming'a rose; Betweenthec'old-water'tank 2 am thechamberiisa' valvey 5'. Theex-hauststeam passing through thepipe3-'from"the cylinder is' 'mainl'y condensedby means' of the sprayor" jj'etsof cold Water delivered through the perforated top of the-'-chamber-4 from thecol d -wa'ter'tankf21- The valve 51s worked by rodsandleversfrorrt the foot-plank of the 'eu'gine; By'-means" 'of they saidrod sand levers the valve 5may be opened and closed at ple'z'tsure. When"the engine is stationary theval ve fi is closed, "and cold -wa f ter.is prevented from passingto'the condens 1 ing-tank lgbut on} startingtheengijnethe 'saidvalve-5- is opened when the greater part A ofthege'xa'ust ste'amfrom the'cylinder is -co'nf densed by the cold watermeeting ition its? 'pa'ssage 'tO-the tank 1 Thehot'water -inthei I tanks1-1: is- 'pumped therefrom by pumps" worked? from 'eccentricson the:axis'of the -,drtving-wheels of theen gine or otherwise." The framing ofthe-engin'emay lee-utilized so ia-s tocarry theexhausttanks; f Theexhaust steam in'th'e tan-ks' 1 11 may be conveyed tothewfront; back,and pattern of locomotive by an arrange?" e-as that a.

toner is situate irertlcally instead fof horizon i tally-,- and: thesaid improvements are-ialso,

plicable to locomotive steam-engines for tramway's, and to marine andstationary steam-engines.

In applying the said improvements to locomotive steam-engines fortramways and to marine and stationary steam-engines, I arrange orcombine the parts constituting my invention, substantially in the mannerdescribed and illustrated, with respect to a locomotive steam-engine,suchchanges only being adopted as are necessary to adapt my improvementsto the particular steam-engine with which they are to be used.

Having now described the nature of my invention, and the manner in whichthe same is to be performed, I wish it to be understood that I do notlimit myself to the precise details herein described and illustrated, asthe same may be varied without departing from the nature of myinvention; but

I claim as my invention of improvements in locomotive and stationarysteam-engines-e 1. The combination, substantially as described, of thefeed-water tank,'the exhaustpipes leading thereto, and the exhaust-steamblast-pipe, through which the surplus exhaust steam in said tank isconveyed to the-fire-box or furnace, as and for the purposes set forth;

2. The combination, substantially as set forth, of the feedwater tank,the exhauststeam pipe or pipes leading thereto, and the blast and boilerfeed connections leading from said tank, whereby the exhaust steam inthe said tank is conveyed both to the fire-box or furnace, and, togetherwith the feed-water, to the boiler, substantially as described.

3. The combination and arrangement, substantially as set forth, of thefeed-water tank,

JOHN DOWNES.

Witnesses:

GEORGE SHAW, HENRY SKERRETT,

Of 37 Temple Street, Birmingham.

